diff --git a/dist/index.js b/dist/index.js
index 83a9b337..01016be3 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -4732,18 +4732,22 @@ async function run() {
         const base = core.getInput('base', { required: false });
         const filtersInput = core.getInput('filters', { required: true });
         const filtersYaml = isPathInput(filtersInput) ? getConfigFileContent(filtersInput) : filtersInput;
-        const listFiles = core.getInput('list-files', { required: false }).toLowerCase() || 'none';
-        const stat = core.getInput('stat', { required: false }).toLowerCase() || 'none';
+        const listFilesFormat = core.getInput('list-files', { required: false }).toLowerCase() || 'none';
+        const statFormat = core.getInput('stat', { required: false }).toLowerCase() || 'none';
         const initialFetchDepth = parseInt(core.getInput('initial-fetch-depth', { required: false })) || 10;
-        if (!isExportFormat(listFiles)) {
-            core.setFailed(`Input parameter 'list-files' is set to invalid value '${listFiles}'`);
+        if (!isFilesExportFormat(listFilesFormat)) {
+            core.setFailed(`Input parameter 'list-files' is set to invalid value '${listFilesFormat}'`);
+            return;
+        }
+        if (!isStatExportFormat(statFormat)) {
+            core.setFailed(`Input parameter 'stat' is set to invalid value '${statFormat}'`);
             return;
         }
         const filter = new filter_1.Filter(filtersYaml);
         const files = await getChangedFiles(token, base, ref, initialFetchDepth);
         core.info(`Detected ${files.length} changed files`);
         const results = filter.match(files);
-        exportResults(results, listFiles);
+        exportResults(results, listFilesFormat, statFormat);
     }
     catch (error) {
         core.setFailed(error.message);
@@ -4904,9 +4908,10 @@ async function getChangedFilesFromApi(token, prNumber) {
         core.endGroup();
     }
 }
-function exportResults(results, format) {
+function exportResults(results, filesFormat, statFormat) {
     core.info('Results:');
     const changes = [];
+    const changeStats = {};
     for (const [key, files] of Object.entries(results)) {
         const hasMatchingFiles = files.length > 0;
         core.startGroup(`Filter ${key} = ${hasMatchingFiles}`);
@@ -4922,8 +4927,8 @@ function exportResults(results, format) {
         }
         core.setOutput(key, hasMatchingFiles);
         core.setOutput(`${key}_count`, files.length);
-        if (format !== 'none') {
-            const filesValue = serializeExport(files, format);
+        if (filesFormat !== 'none') {
+            const filesValue = serializeExportChangedFiles(files, filesFormat);
             core.setOutput(`${key}_files`, filesValue);
         }
         const additionCount = files.reduce((sum, f) => sum + f.additions, 0);
@@ -4931,6 +4936,9 @@ function exportResults(results, format) {
         core.setOutput(`${key}_addition_count`, additionCount);
         core.setOutput(`${key}_deletion_count`, deletionCount);
         core.setOutput(`${key}_change_count`, additionCount + deletionCount);
+        changeStats[key] = {
+            additionCount, deletionCount, fileCount: files.length
+        };
         core.endGroup();
     }
     if (results['changes'] === undefined) {
@@ -4941,8 +4949,12 @@ function exportResults(results, format) {
     else {
         core.info('Cannot set changes output variable - name already used by filter output');
     }
+    if (statFormat !== 'none') {
+        const statValue = serializeExportStat(changeStats, statFormat);
+        core.setOutput(`stat`, statValue);
+    }
 }
-function serializeExport(files, format) {
+function serializeExportChangedFiles(files, format) {
     const fileNames = files.map(file => file.filename);
     switch (format) {
         case 'csv':
@@ -4957,7 +4969,21 @@ function serializeExport(files, format) {
             return '';
     }
 }
-function isExportFormat(value) {
+function serializeExportStat(stat, format) {
+    switch (format) {
+        case 'csv':
+            return Object.keys(stat).sort().map(k => [csv_escape_1.csvEscape(k), stat[k].additionCount, stat[k].deletionCount, stat[k].fileCount]
+                .join(',')).join('\n');
+        case 'json':
+            return JSON.stringify(stat);
+        default:
+            return '';
+    }
+}
+function isFilesExportFormat(value) {
+    return ['none', 'csv', 'shell', 'json', 'escape'].includes(value);
+}
+function isStatExportFormat(value) {
     return ['none', 'csv', 'shell', 'json', 'escape'].includes(value);
 }
 run();
diff --git a/src/main.ts b/src/main.ts
index 62b011bc..ffc49023 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -9,7 +9,8 @@ import * as git from './git'
 import {backslashEscape, shellEscape} from './list-format/shell-escape'
 import {csvEscape} from './list-format/csv-escape'
 
-type ExportFormat = 'none' | 'csv' | 'json' | 'shell' | 'escape'
+type FilesExportFormat = 'none' | 'csv' | 'json' | 'shell' | 'escape'
+type StatExportFormat = 'none' | 'csv' | 'json'
 
 async function run(): Promise<void> {
   try {
@@ -23,12 +24,17 @@ async function run(): Promise<void> {
     const base = core.getInput('base', {required: false})
     const filtersInput = core.getInput('filters', {required: true})
     const filtersYaml = isPathInput(filtersInput) ? getConfigFileContent(filtersInput) : filtersInput
-    const listFiles = core.getInput('list-files', {required: false}).toLowerCase() || 'none'
-    const stat = core.getInput('stat', {required: false}).toLowerCase() || 'none'
+    const listFilesFormat = core.getInput('list-files', {required: false}).toLowerCase() || 'none'
+    const statFormat = core.getInput('stat', {required: false}).toLowerCase() || 'none'
     const initialFetchDepth = parseInt(core.getInput('initial-fetch-depth', {required: false})) || 10
 
-    if (!isExportFormat(listFiles)) {
-      core.setFailed(`Input parameter 'list-files' is set to invalid value '${listFiles}'`)
+    if (!isFilesExportFormat(listFilesFormat)) {
+      core.setFailed(`Input parameter 'list-files' is set to invalid value '${listFilesFormat}'`)
+      return
+    }
+
+    if (!isStatExportFormat(statFormat)) {
+      core.setFailed(`Input parameter 'stat' is set to invalid value '${statFormat}'`)
       return
     }
 
@@ -36,7 +42,7 @@ async function run(): Promise<void> {
     const files = await getChangedFiles(token, base, ref, initialFetchDepth)
     core.info(`Detected ${files.length} changed files`)
     const results = filter.match(files)
-    exportResults(results, listFiles)
+    exportResults(results, listFilesFormat, statFormat)
   } catch (error) {
     core.setFailed(error.message)
   }
@@ -231,7 +237,7 @@ interface Stat {
   fileCount: number
 }
 
-function exportResults(results: FilterResults, format: ExportFormat): void {
+function exportResults(results: FilterResults, filesFormat: FilesExportFormat, statFormat: StatExportFormat): void {
   core.info('Results:')
   const changes: string[] = []
   const changeStats: {[key: string]: Stat} = {}
@@ -251,8 +257,8 @@ function exportResults(results: FilterResults, format: ExportFormat): void {
 
     core.setOutput(key, hasMatchingFiles)
     core.setOutput(`${key}_count`, files.length)
-    if (format !== 'none') {
-      const filesValue = serializeExportChangedFiles(files, format)
+    if (filesFormat !== 'none') {
+      const filesValue = serializeExportChangedFiles(files, filesFormat)
       core.setOutput(`${key}_files`, filesValue)
     }
 
@@ -276,13 +282,13 @@ function exportResults(results: FilterResults, format: ExportFormat): void {
     core.info('Cannot set changes output variable - name already used by filter output')
   }
 
-  if (format !== 'none') {
-    const statValue = serializeExportStat(changeStats, format)
+  if (statFormat !== 'none') {
+    const statValue = serializeExportStat(changeStats, statFormat)
     core.setOutput(`stat`, statValue)
   }
 }
 
-function serializeExportChangedFiles(files: File[], format: ExportFormat): string {
+function serializeExportChangedFiles(files: File[], format: FilesExportFormat): string {
   const fileNames = files.map(file => file.filename)
   switch (format) {
     case 'csv':
@@ -298,7 +304,7 @@ function serializeExportChangedFiles(files: File[], format: ExportFormat): strin
   }
 }
 
-function serializeExportStat(stat: {[key: string]: Stat}, format: ExportFormat): string {
+function serializeExportStat(stat: {[key: string]: Stat}, format: StatExportFormat): string {
   switch (format) {
     case 'csv':
       return Object.keys(stat).sort().map(k =>
@@ -307,17 +313,17 @@ function serializeExportStat(stat: {[key: string]: Stat}, format: ExportFormat):
       ).join('\n')
     case 'json':
       return JSON.stringify(stat)
-    case 'escape':
-      return ''
-    case 'shell':
-      return ''
     default:
       return ''
   }
 }
 
-function isExportFormat(value: string): value is ExportFormat {
+function isFilesExportFormat(value: string): value is FilesExportFormat {
   return ['none', 'csv', 'shell', 'json', 'escape'].includes(value)
 }
 
+function isStatExportFormat(value: string): value is StatExportFormat {
+  return ['none', 'csv', 'json'].includes(value)
+}
+
 run()